Renesas Synchronization Management Unit with SPI

modulename: rsmu-spi.ko

configname: CONFIG_MFD_RSMU_SPI

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>SPI support
└─>Device Tree and Open Firmware support
└─>Renesas Synchronization Management Unit with SPI
In linux kernel since version 5.2 (release Date: 2019-07-07)  
Support for the Renesas Synchronization Management Unit, such as
Clockmatrix and 82P33XXX series. This option supports SPI as
the control interface.

This driver provides common support for accessing the device.
Additional drivers must be enabled in order to use the functionality
of the device.

source code: